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14 hours ago · Passenger pigeon. The passenger pigeon or wild pigeon ( Ectopistes migratorius) is an extinct species of pigeon that was endemic to North America. Its common name is derived from the French word passager, meaning "passing by", due to the migratory habits of the species. The scientific name also refers to its migratory characteristics.
14 hours ago · Psychoanalysis [i] is a set of theories and therapeutic techniques [ii] that deal in part with the unconscious mind, [iii] and which together form a method of treatment for mental disorders. The discipline was established in the early 1890s by Sigmund Freud, [1] whose work stemmed partly from the clinical work of Josef Breuer and others.
